Carton and its blank



July 30, 1929. N O JC-HNSON 1,722,422

CARTON AND ITS BLANK Filed July 14, 1928 2 Sheets-Sheet 1 y 31929- o. JOHNSON CARTON AND ITS BLANK HJZZAZZ 2 Sheets-Sheet 2 Filed July 1.4, 1928 Patented July 30, v 1929.

UNE F- TA NORMAN O. JOHNSON, OF CHICAGO,

ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

ILLINOIS CARTON & LABEL COMPANY, OF CHICAGO, ILLINOIS, A CORPORATIONOF ILLINOIS.

CARTON AND ITS BLANK.

Application filed July 14,

My invention pertains to cartons or con-- tainers and the blanks from which they are formed, one of the leading aims and purposes of the invention being to provide .a

carton which can be economically manufactured, which will protect its contents effectually, and which does not require the use of adhesive in its production, the folding of the blank so interlocking the parts of the structure as to prevent their unintentional unfolding.

To enable those skilled in this art to have a full and complete understanding of the invention, both from structural and functional standpoints, a present, desirable or preferred embodiment of the invention has been illustrated in the accompanying drawings, forming a part of this specification, and to which reference should be had in connection with the following detailed description, like reference characters designating the same parts throughout the several views of the drawings.

In these drawings Figure 1 is a face view of the pasteboard blank from which the carton is formed;

Figure 2 is a perspective view showing the first folding operation of the blank;

Figure 3 is a similar, perspective view indicating a subsequent folding operation; Figure 4 illustrates, in like manner, the succeeding step in the folding action; and Figure 5 is a perspective view of the completed carton.

Referring to these drawings, and particularly initially to Figure 1 thereof, it will be perceived that the blank comprises a central, substantially-rectangular portion divided by parallel, folding lines or creases 11, 12, 13 and 14 into'a complete or unbroken, outer front section 15, a next adjacent, sim-- ilar, bottom section 16, a like, succeeding, outer,-back section 17, a comparable, outer, top section 18, and an adjoining flap 19, two corners of which are rounded at 21, 21, as shown, to facilitate its introduction into the space provided for it in the finished article.

' The ends of the front section 15 have parallel, folding lines or creases 22, 22 beyond which are two, inner, end-wall sections 23,

1928. Serial No. 292,803.

23 connected at their outer ends, along folding or crease lines 24, 24, tov intermediate back sections 25 and 26, the combined lengths of which are substantially equal to the length of the companion or cooperating, back section 17, although the part 25 is made purposely shorter than the part 26, so that the break or joint 20 between them will not be at the middle of the length of the finished receptacle.

At both ends of the bottom section 16 there are outer end-wall sections 27, 27 with folding or crease lines 28, 28-between them and the specified bottom portion.

Such parts 27 are separated from the sections 23, 23, 25 and 26'by reason of slits 29 which divide them, as shown.

Directly beyond each, such, outer, end portion 27, with a corresponding intervening crease or folding line 31, there is an inner, top-wall section 32 which carries on one side an inner, back section 33 with an appropriate crease or folding line 34 between them, the parts 33, 33 being of equal length.

It is to be understood that this blank is formed of a single, flat piece of pasteboard, cardboard, or equivalent foldable material v of appropriate thickness and of the shape and supplied with the folding lines and the cuts or slits clearly illustrated and specified so in detail above.

The first step in the preferred, folding operation is to bend the blank along the lines or creasesll, 22 and 24, as shown in Figure 2, thus temporarily forming or provid- 'ing an open-top receptacle having the bot tom 16, the two ends 23, 23 and the front and back walls 15 and 2526.

The body to be enclosed in the carton may now be placed in such open container, if desired, or the indicated folding operation may be performed around such body or article, for instance, a bottle, whereupon/the folding operation continues by bending the blank along the lines 28, 28, whereby the end-walls 27 27 are positioned just outside of and bear against and reenforce the exterior faces of the inner end-walls 23, 23.

Then the folding continues by flexing the blank along the lines or creases 31 and 34,

(see Figure 3) which brings the portions 32, 32 over the previously open top of the receptacle and positions the inner back sections 33, 33 just inside of the intermediate, back sections 25' and 26. This condition of the structure is shown in Figure 4.

In view of the fact that the parts 33, 33 are then inside of the inner end-walls 23, 23, the sections 27, 27 are securely locked in place against the portions 23,- 23.

Inasmuch as the parts 25 ;and 26 are of different lengths, whereas the portions 33, 33 are of the same length, the joints between the ends of such companion elements are not in register, thus giving the box or carton adequatestrength to withstand the strains to which it may be subjected.

Thereupon, the blank is folded along the lines 12, 13 and 14, and the flap 19 is introduced or inserted between the frontsection 15 and the adjacent edges of the top wall por- 'tions 32, 32, whereby the flap is securely and firmly retained in place against accidental unfolding of the box.

In order that such flap may be readily inserted in the position indicated and without bulging or distorting any of the parts of the container, the original blank is desirably provided with substantial gaps or slots 35, 36 between the adjacent edges of the parts 32 and 25 and ,32 and 26, so that the elements 32 are slightly narrower than the end wall portions 27 toWhich they are attached, hence providing a slight space for the easy introduction of the flap.

From the foregoing it should be clear that the completed or finished carton has a singlethickness bottom 16, a double thickness frontwall composed of the outer element 15 and the inner, adjacent flap 19, -a triple-thiclmess back composed of the broken or divided, in-

ner thickness formed by the parts 33, 33, the

intermediate, divided thickness composed of the parts 25, 26, and the unbroken outerthick:

ness provided by the blank section 17, a double-thickness top-wall made up of an inner,

divided or broken thickness composed ofthe sections 32, 32 and an overlying, unbroken thickness formed by the section 18, and two end-walls, each of which is of doublethlckness constituted by the inner section 23 and the associated outer section 27. 7

With but'slight, or no, modification of the blank depicted, it may be fdlded somewhat dlfferently to provide a carton with much the same characteristics as that already presented.

In such case, the blank is first folded along the l nes 28, 31 and 34 and then folded along the llnes 11, 22 and 24, whereupon the com pletlon of the bending along the lines 12, 13 and 14 and the introduction of the flap into position is consummated.

Such a carton will have the same thickness of walls as the one already described, but the folding along the lines 12, 13 and 14 with the insertion of the flap.

7 Such a completed structure, while having certain advantages, does not lock the endwalls together so securely or effectively as is accomplished by the preferred folding action first detailed hereinbefore.

With a moderate degree of practice a person can fold this blank and introduce the article to be housed in the container with great rapidity and'ease.

Those acquainted with this art will readily appreciate that the invention, as defined bythe appended claims, is not necessarily limited or restricted tothe precise and exact details of structure and modes of operation presented and that many, a minor, mechanical changes may be incorporated without departure from-the heart and essence of the invention and without the loss or sacrifice of any of its substantial or material benefits or advantages.

I claim: 1. A single-piece foldabl'e blank for forming a carton having five, parallel, directlyadjacent sections with folding lines between them, the ends of the first of said sections having lengthwise extensions constituting end-Wall sections, the latter having outer end" extensions comprising back sections, theouter ends of the second of said parallel sections having extensions, constituting end-wall sections, the outer ends of the latter having ex-' tensions forming'top-wall sections, said topwall sections having side projections forming back sections.

2. A carton formed of a single-piece folded blank and having a single-thickness singlepiece bottom-wall, a double-thickness frontwall composed of a singleepiece outer thickness, and an inner single-piece flap, a doublethickness top-Wall composed of a divided inner thickness and a singlepieec outer thickness, a triple-thickness back-wall formed of a divided inner thickness, a divided intermediate thickness, and a single-piece outer thickness, and opposite double-thickness endwalls each thickness of which is a single-piece element.

3. A carton formed'of a single-piece folded 7 blank and having a single-piece outer front, bottom, back, top and flap with said flap attached to said top and folded inside of said front, inner single-piece end-walls attached directly to the ends of said front, an intervided inner back composed'of extensions on mediate back composed of sections directly the sides of the sections forming said inner connected to the ends of said end-walls,outcr top. single-piece end-Walls directly connected to In witness whereof I have hereunto set my 5 the ends of said bottom, an inner divided top hand and seal.

formed by extensions directly connected to the ends of'said outer end-Walls, and adi- NORMAN O. JOHNSON. [11. 8.] 

